

Volume 5 July 7, 1909 



MUHLENBERG1A 



=. LIBK, 



MORE SOUTHWESTERN CASTILLEJAS 



By Paul C. Standley 



Since writing the description of Castilleja Blumeri and the 

 note upon C. patriotica, published in the March number of 

 MUHLENBERGIA, the writer has received from Mr. Blnmer sev- 

 eral other plants of this genus from southern Arizona. In the 

 lot were included specimens of C. minor A. Gray, C. Integra 

 A. Gray, and C. linariacfolia Benth. All these were collected 

 in the Chiricahna mountains. Besides these, collections were 

 sent of two other members of the genus, both of which appear 

 to be new. They were not collected in quantity, and so were 

 not distributed in the sets recently sent out by Mr. Blnmer. 



Castilleja retrorsa sp. now 



A low perennial: stems slender, 2 dm. high or less, branched 

 from the base, finely retrorse-pilose throughout: leaves entire, 

 linear, 25 mm. long or less, dull green, rather densely puberu- 

 lent on both surfaces: bracts entire, linear or lanceolate, yellow- 

 ish-scarlet: flowers rather few and crowded, somewhat divaricate, 

 almost or quite sessile: calyx 3 cm. long or less, tubular, scarlet, 

 soft pubescent, cleft in front for almost half its length, obscurely 

 cleft behind: corolla about 4 cm. long, hence conspicuously ex- 

 serted, sparingly pubescent, greenish-yellow, the galea slightly 

 shorter than the tube. 



The specimens that I have of this plant are scarcely more 

 than fragments, yet the plant appears so distinct that it seems 

 worth recording. It reminds one of C. patriotica, but differs 

 from that species in its pubescence, the type collection of the 

 latter being glabrous except in the inflorescence, and there it 



E: (SO 



